Impulse 8126 - Manual (Page 25)

SeaI/O Configuration Tab (cont.)
The “Broadcast to Multiple Modules” checkbox, along with the “Set Settings” button
can be used to change the baud rate and parity on multiple SeaI/O modules at once.
This function only works with SeaI/O modules connected together via the pass-
through connectors. This function is disabled with SeaDAC and SeaDAC Lite
modules since these devices do not have pass-through connectors.
MaxSSD broadcasts a set data rate and set parity command to all devices on the RS-
485 bus, but only those modules listening at the current baud rate will be able to
receive and respond. For example, if you have five SeaI/O modules chained together
and two are set to 9600 bps and no parity and three are set to 115.2k bps and the PC
is set to 9600 bps, only the two modules set to 9600 bps will receive the broadcast set
data rate and parity message.
NOTE: Important note regarding SeaI/O Ethernet (E-series) modules
The broadcast feature sets the Ethernet SeaI/O (E-series) module’s
TCP/IP to RS-485 translation data rate independently of the SeaI/O
module itself. Therefore, if you have an Ethernet SeaI/O module
and you set the data rate to 115.2K bps via a MaxSSD broadcast
command, both the RS-485 port and the Ethernet port will respond
thereafter to 115.2K bps, as expected. However, if you reset the
SeaI/O module by rotating the rotary switch clockwise one complete
revolution, the RS-485 port will reset to 9600 bps and no parity, but
the Ethernet port will remain unaffected. To restore
communications, broadcast another set data rate and parity
command (9600 and no parity) via MaxSSD.
© Sealevel Systems, Inc. - 23 - SeaDAC Lite User Manual